Matt McTighe

When a gang of suspected murderers begins targeting a new victim each night, the BAU travels to Portland to head them off before they can strike again.

The doctors compete for Richard's affections; a surgical patient endangers the lives of those around her; Meredith's mother, who has Alzheimer's disease, experiences a change in her medical condition.

When a man dressed as Santa Claus blows himself up during a botched bank robbery, Brennan and Booth work to identify the bomber and determine his motives. Meanwhile, Brennan makes plans to spend Christmas in El Salvador, but her father (guest star Ryan O'Neal) convinces her to spend the holidays with him and Margaret Whitesell (guest star Zooey Deschanel), a newly discovered distant relative.

A professional hit man (Max Martini) with information about the murder of Beckett's mother escapes during a court hearing; Castle and the team uncover a deep conspiracy.

When a mortar attack in Baghdad turns into a murder investigation, two members of the NCIS team are sent to Iraq to solve the case.

The CBI team investigates when the body of a female army medic who worked with soldiers suffering from PTSD is found near a military base.